WordPress 3.4 is here and its time to checkout whats new in the box. Three features stand out – The Theme Customizer, Twitter Embed and HTML Support for Image Captions. (Yeah yeah, the stuff that they show on the Welcome page

The default themes, Twenty Ten and Twenty Eleven are also updated to support the Theme Customizer, but you aren’t using the default theme, are you? But that doesn’t mean you can’t use the feature, here is how you can make the most of it.

Adding Theme Customizer Support For Your Theme

I have used the Cutline 2.2 theme for an example here. With this tutorial you should be able to add Custom Header Support, Custom Background Image and Custom Background Color to the theme.

Creating a Custom Header Area

Open up your functions.php and add the following code to it, somewhere it would look nice. This will tell WordPress that your theme supports Custom Headers: